The "Myth" of the minimum SAR antenna area constraint

A design constraint traceable to the early days of spaceborne synthetic aperture radar (SAR) is known as the minimum antenna area constraint for SAR. In this paper, it is confirmed that this constraint strictly applies only to the case in which both the best possible resolution and the widest possib...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2000-01, Vol.38 (1), p.320-324
Main Authors: Freeman, A., Johnson, W.T.K., Huneycutt, B., Jordan, R., Hensley, S., Siqueira, P., Curlander, J.
Format: Article
Language:English
Subjects:
Antennas
Aperture antennas
Applied geophysics
Azimuth
Bandwidth
Earth sciences
Earth, ocean, space
Exact sciences and technology
Internal geophysics
Laboratories
Missions
Propulsion
Radar antennas
Receiving antennas
Remote sensing
Spaceborne radar
Synthetic aperture radar
Vehicles
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Summary:A design constraint traceable to the early days of spaceborne synthetic aperture radar (SAR) is known as the minimum antenna area constraint for SAR. In this paper, it is confirmed that this constraint strictly applies only to the case in which both the best possible resolution and the widest possible swath are the design goals. SAR antennas with area smaller than the constraint allows are shown to be possible, have been used on spaceborne SAR missions in the past, and should permit further, lower-cost SAR missions in the future.
ISSN:0196-2892
1558-0644
DOI:10.1109/36.823926